Description:
------------
php -v
PHP 7.1.23 (cli) (built: Feb 22 2019 22:08:13) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.1.0, Copyright (c) 1998-2018 Zend Technologies

----

Created an object with a protected property

Created a magic get "__get($name) { return $this->name; }"

Assigned my variable a value within the class (in correct scope)

When testing if variable is empty outside of object scope it incorrectly returns true for emptyness


Test script:
---------------
```
var_dump($obj->var, empty($obj->var));
// Outputs:
// $obj->var = "something"
// empty($obj-<var) = true

But it will work if I pre-retrieve the variable.
$val = $obj->var
var_dump($var, empty($var));
// Outputs:
// $obj->var = "something"
// empty($obj-<var) = false

```

Expected result:
----------------
empty on protected variable with a getter should resolve the getter first, then test emptyness

Actual result:
--------------
empty call on a protected $obj->var - with a magic __get - returns true even if variable is not empty